The Tor Browser: dom/plugins/test/mochitest/test_plugin_scroll

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 <!DOCTYPE HTML>

     2 <html>

     3 <head>

     4   <title>Test that scrolling a windowless plugin doesn't force us to repaint it</title>

     5   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

     6   <script type="text/javascript" src="utils.js"></script>

     7   <script type="text/javascript">

     8     setTestPluginEnabledState(SpecialPowers.Ci.nsIPluginTag.STATE_ENABLED);

     9   </script>

    10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

    11 </head>

    12 <body onload="runTest()">

    13 <p id="display"></p>

    14   <embed id="plugin" type="application/x-test" style="width:50px; height:10px; margin-top:20px;"></embed>

    15 </div>

    16 <div id="content" style="display: none">

    18 </div>

    19 <pre id="test">

    20 </pre>

    22 <script type="application/javascript">

    23 SimpleTest.waitForExplicitFinish();

    25 var container = document.documentElement;

    26 container.scrollTop = 0;

    27 var plugin = document.getElementById("plugin");

    28 var pluginTop;

    29 var beforeScrollPaintCount;

    31 function waitForScroll() {

    32   if (plugin.getEdge(1) >= pluginTop) {

    33     setTimeout(waitForScroll, 0);

    34     return;

    35   }

    37   is(plugin.getPaintCount(), beforeScrollPaintCount, "plugin should not paint due to scrolling");

    38   SimpleTest.finish();

    39 }

    41 function waitForInitialScroll() {

    42   if (plugin.getEdge(1) >= pluginTop) {

    43     setTimeout(waitForInitialScroll, 0);

    44     return;

    45   }

    47   pluginTop = plugin.getEdge(1);

    48   beforeScrollPaintCount = plugin.getPaintCount();

    49   container.scrollTop = 20;

    50   waitForScroll();

    51 }

    53 function runTest() {

    54   document.body.offsetTop;

    55   pluginTop = plugin.getEdge(1);

    56   container.scrollTop = 10;

    57   waitForInitialScroll();

    58 }

    59 </script>

    61 <div style="height:4000px;"></div>

    63 </body>

    64 </html>

The Tor Browser / file revision